Miles to KM Converter — Free & Instant

What This Tool Does

This tool converts any distance in miles to kilometres using the exact conversion factor (1 mile = 1.609344 km), not a rounded approximation. It's aimed at anyone in a metric country trying to make sense of a distance, speed limit, or race length quoted in miles — common in US and UK content, road signage and fitness apps set to imperial units.

How to Use It

Type your distance in miles into the value field (the tool is pre-set to convert Miles → KM).
Press Convert.
Your result in kilometres appears instantly. Need a different unit pair? The Category, From and To dropdowns above the result still work if you want to switch.

Example

A US treadmill set to show miles per hour, or a road trip planned using an American route-planning site quoting distances in miles — a 100-mile drive converts to 160.9 km, useful for estimating fuel and travel time the way you're used to thinking about it.

Frequently Asked Questions

How many km is 1 mile, exactly?

1 mile equals exactly 1.609344 kilometres. For a rough mental estimate, multiplying miles by 1.6 gets you close for most everyday purposes.

Why do some countries still use miles?

The United States, and to a lesser extent the UK, still use miles for road distances and speed limits despite most of the world using kilometres — a holdover from before those countries' partial or non-adoption of the metric system.

Does this work for speed conversions too, like mph to km/h?

This specific tool converts distance, not speed — but since speed is just distance per hour, you can use the same 1.609344 factor: multiply a speed in mph by 1.609344 to get km/h.